Magnetovision [magnetic field scanning system]

Author

Michalski, Andrzej

Author_Institution

Electr. Eng., Warsaw Univ. of Technol., Poland

Volume

5

Issue

3

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

66

Lastpage

69

Abstract

The experimental analysis of magnetic fields by scanning methods can effectively support and verify modern numerical methods. The scanning methods are especially suitable for testing the material structure and as a method for material evaluation. By applying the appropriate imaging techniques it is possible to reconstruct the magnetic field strength in an arbitrary plane. In the Magnetovision system, the specific area of a material is magnetized using a C-yoke. A line of miniature thin-film magnetoresistive sensors measures the magnetic field strength above the magnetized sample. Graphical results of the magnetic field strength scanned around steel samples are presented, showing that Magnetovision could be an effective system for nondestructive materials testing.

Keywords

eddy current testing; image processing; magnetic field measurement; magnetic sensors; magnetic thin film devices; magnetisation; magnetoresistive devices; C-yoke magnetising device; Magnetovision; graphical display magnetic field scanning system; magnetic field numerical analysis; magnetic field plane; magnetic field strength reconstruction; material evaluation; material structure testing; nondestructive materials testing; scanned image processing; steel sample magnetic field; thin-film magnetoresistive sensors; Image reconstruction; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic films; Magnetic materials; Magnetic sensors; Magnetoresistance; Materials testing; Thin film sensors;

fLanguage

English

Journal_Title

Instrumentation & Measurement Magazine, IEEE

Publisher

ieee

ISSN

1094-6969

Type

jour

DOI

10.1109/MIM.2002.1028379

Filename

1028379